Sulfate-free shampoo for overprocessed, damaged hair gently cleanses, reduces breakage and strengthens without stripping hair. Biolage Bond Therapy Sulfate-Free Shampoo for overprocessed, damaged hair builds bonds from the inside out. Infused with coconut oil and citric acid, nourishes hair and reinforces weak bonds leaving hair stronger, softer, and intensely conditioned without feeling weighed down.